| 摘要 |
PROBLEM TO BE SOLVED: To eliminate such an inconvenient phenomenon as to rapidly spring up a lift by action of an air spring when a part of load of a cargo is lost from the lift at unloading work on a vehicle which is equipped with the lift. SOLUTION: A mechanical control means is provided between a chassis and an axle shaft. Change in vehicle height caused by the action of the air spring for the duration of the unloading work is eliminated by validating the mechanical means by means of an electrical signal which is generated as a result of lifting operation.
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